Thermal transfer image receiving sheet and method for manufacturing the same

a technology of thermal transfer and receiving sheet, which is applied in the direction of thermal imaging, other domestic articles, coatings, etc., can solve the problems of paper jam, film is shrunk in a drawing direction, curl and wrinkle, etc., and achieves low heat conductivity, easy manufacturing, and enhanced sensitivity.

Inactive Publication Date: 2007-07-17
DAI NIPPON PRINTING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The solution enhances sensitivity while simplifying manufacturing and reducing costs by interposing a thermal insulation layer between the dye receiving layer and the base material sheet, minimizing heat conductivity and eliminating the need for solvent adhesives, thus improving print quality and reducing production complexity.

Problems solved by technology

However, when the biaxial stretched film is used for the base material of the image receiving sheet, the residual stress at the time of drawing is eased by heat at the time of printing, and the film is shrunk in a drawing direction.
As a result, curl and wrinkle are generated on the image receiving sheet, and trouble such as paper jam may be caused on paper when the image receiving sheet travels in a printer.
However, since the biaxial stretched film having voids has large retractility, it is difficult to control the tension at the time of laminating, and thereby productivity is lowered.
Also, the manufacturing cost is greatly increased.

Method used

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  • Thermal transfer image receiving sheet and method for manufacturing the same
  • Thermal transfer image receiving sheet and method for manufacturing the same
  • Thermal transfer image receiving sheet and method for manufacturing the same

Examples

Experimental program
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Effect test

example 1

[0033]A base material sheet containing coat paper whose the basis weight was 170 g / m2 and a base material film which was 4.2 μm in thickness and was made of PET were laminated by the resin to be extruded which was made of the following composition. After that, an intermediate layer and a dye receiving layer made of the following composition were coated outside of the base material film made of PET by a gravure coating method such that the coating amount of the intermediate layer and the coating amount of the dye receiving layer were respectively set to 2.0 g / m2 and 4.0 g / m2 at the time of drying. A thermal transfer image receiving sheet of Example 1 was then formed by drying.

(1) Resin to be Extruded

Resin (Sumikasen 10P manufactured by SumitomoMitsui Polyolefin(SMPO)) 100 parts by weight

Foaming agent (Polythlene EE207 manufactured by Eiwa Chemical Ind. Co., Ltd.) 5 parts by weight

(2) Intermediate Layer

Polyester resin (Byron 200 manufactured by Toyobo Co., Ltd.) 10 parts by weight

Tita...

example 2

[0034]The resin to be extruded of Example 1 and a clear layer having the following composition were extruded and laminated on the base material sheet such that the clear layer was positioned at the side of the base material sheet. A thermal transfer image receiving sheet of Example 2 was formed in a manner equivalent to that described in Example 1 except the above procedure.

Clear Layer

Resin (Sumikasen 10P manufactured by SumitomoMitsui Polyolefin(SMPO)) 100 parts by weight

example 3

[0035]The clear layer of Example 2 was extrusion-molded on both sides of the resin to be extruded of Example 1, and thereby a thermal insulation layer was composed. A thermal transfer image receiving sheet of Example 3 was formed in a manner equivalent to that described in Example 1 except the above procedure.

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Abstract

It is an object of the invention to provide a thermal transfer image receiving sheet which can enhance sensitivity by low heat conductivity and can be easily manufactured at a low cost compared with the lamination of a foaming film. In a thermal transfer image receiving sheet 1 wherein a thermal insulation layer 5 and a dye receiving layer 8 are formed on a base material sheet 2, the thermal insulation layer 5 is formed by extrusion-molding a resin containing at least one of a foaming agent and hollow bodies. The resin extruded at the time of forming the thermal insulation layer 5 is inserted between the base material sheet 2 and the base material film 6, and the base material sheet 2 and the base material film 6 are bonded to each other via the thermal insulation layer 5. The dye receiving layer 8 is formed outside of the base material film 6.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]The invention relates to a thermal transfer image receiving sheet which is used with a thermal transfer sheet superposed.[0003]2. Description of the Related Art[0004]A method for forming a full-color image by superposing a thermal transfer sheet and a thermal transfer image receiving sheet each other is known as a method for forming an image using thermal transfer. In the thermal transfer sheet, a sublime dye as a record material is supported on a base material sheet such as paper and a plastic film. In the thermal transfer image receiving sheet, a receiving layer for the sublime dye is formed on one surface of the paper and the plastic film. Since the sublime dye is used as a color material in the method, a density gradation can be freely adjusted in dot units, and the same full-color image as a manuscript can be expressed on the receiving sheet. Since the image formed by the dye is very clear and excellent in transpar...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): B41M5/035B41M5/50B41M5/382B29C47/02B29K105/04B29L7/00B29L9/00B41M5/40B41M5/42B41M5/44B41M5/52
CPCB41M5/42B41M5/423B41M5/426B41M5/44B41M2205/02B41M2205/32B41M2205/38
InventorOMATA, TAKENORISUZUKI, TAROSUZUKI, MASAMITSUORIMO, YOJI
OwnerDAI NIPPON PRINTING CO LTD